单项选择题
如图所示铰接悬臂行车道板、承受公路-Ⅱ级荷载
A.0.29 B.0.38 C.0.295 D.0.285
A.0.55 B.0.60 C.0.65 D.1.0
A.310mm B.330m C.560mm D.620mm